Suspension salt well completion fluid
A completion fluid and suspension technology, applied in the direction of drilling composition, chemical instruments and methods, etc., can solve the problems of completion fluid specific gravity, unrecoverable formation, formation pollution, etc., and achieve good compatibility and thermal stability , Reduce the entry of water molecules, improve the effect of liquid phase salinity
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[0025] 1. Inject 70.67 cubic meters of water into the mud mixing tank, add 24.73 tons of sodium chloride under stirring, and stir for 30 minutes. Formulated to a specific gravity of 1.2g / cm 3 The completion base fluid is 79.36 cubic meters.
[0026] 2. Under the state of high-speed stirring, add a hydraulic jet pump at the same time, and add 0.6 tons of viscosifier A HEC to the liquid distribution tank; dissolve evenly, and no micelles should appear.
[0027] 3. Add 3.2 tons of tackifier B under stirring.
[0028] 4. Continue to add 0.15 tons of ferric thiocyanate chelating agent while stirring. If the temperature resistance condition is greater than 80°C, add 0.2 tons of oil layer protection agent and stir evenly;
[0029] 5. Continue to add 44.57 tons of sodium chloride in the state of stirring in the above homogeneous solution to obtain a specific gravity of 1.4g / cm 3 Suspended sodium chloride completion fluid 100 cubic meters.
[0030] 6. Finally, add 1 ton of corrosio...
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